Home / 711,077.61-981,287.19-388,787.93

Finding the Fourth Proportional to 711,077.61, 981,287.19 and 388,787.93

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Solution

The fourth proportional to 711,077.61, 981,287.19 and 388,787.93 is: 536,527.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,077.61 : 981,287.19 = 388,787.93 : x
  2. Step 2: Convert to fraction form
    711,077.61/981,287.19 = 388,787.93/x
  3. Step 3: Cross multiply
    711,077.61x = 981,287.19 × 388,787.93
  4. Step 4: Simplify right side
    711,077.61x = 381,512,615,335.62
  5. Step 5: Solve for x
    x = 381,512,615,335.62/711,077.61
  6. Step 6: Final answer
    x = 536,527.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.